The one-stop-shop for your cybersecurity program.

Full-stack engineer

$80K - $160K / 0.10% - 1.00%
Amsterdam, NH, NL
Job Type
6+ years
Connect directly with founders of the best YC-funded startups.
Apply to role ›
Bryan Onel
Bryan Onel

About the role

** We are currently only accepting applications from NATO countries **

At Oneleet we are seeking a highly motivated and talented full-stack engineer to join our rapidly growing team. The candidate will be responsible for designing and building the core technology that powers the platform, collaborating with the founding team to understand business needs, writing clean and maintainable code, and mentoring junior engineers.


  • 6+ years of experience in full-stack software engineering
  • Experience architecting, building and maintaining SAAS platforms
  • Experience with Typescript, React, Postgres, AWS, and Microservices
  • Experience designing and coding modern SPA front-ends (SCSS/Tailwind)
  • Experience creating and leading teams of multiple engineers
  • Bonus: Experience in the information security field
  • Bonus: Bachelor's or Master's degree in Computer Science or related field
  • Bonus: experience with Go, Rust, or Terraform

Key Responsibilities:

  • Build and design the core technology that powers the platform
  • Integrate numerous solutions like penetration testing, vulnerability assessments, awareness training, static code scanning, and endpoint monitoring
  • Collaborate with the founding team to understand business needs and develop a technical roadmap
  • Write clean, maintainable, and scalable code
  • Contribute to the architecture and design of the product
  • Mentor junior engineers and help them grow in their careers

You should apply if any of the following excite you:

  • Building a modular client-facing platform that brings together multiple security services like penetration testing, bug bounty reporting, compliance automation, dark web monitoring, etc.
  • Building an automated roadmap that help companies become more secure
  • Building tools to automate DevSecOps, Like building a tool that extracts endpoints from codebases together with its parameters every time code is pushed
  • Building web app shims that can monitor all web app traffic, and the common bounds of parameters (so that we can do checks outside of those bounds)
  • Defining a framework that helps prevent common authorization-logic vulnerabilities
  • Roll your own EDR, SIEM or MDM solution
  • Exploring ways and appropriate architectures to integrate diverse modules. Event-based vs. classical DB, monolith vs. microservices, etc.

The type of person we're looking for

At Oneleet we value individuals who are passionate and motivated to make a large impact in the cybersecurity ecosystem. We are looking for rebels with a growth mindset who love to take ownership, who exhibit excellent communication skills, and who have a "can-do" attitude towards technical challenges and innovation.

If you have a desire to work at a fast-paced startup that is aggressively growing, reach out to us! Previous experience at startups is appreciated but not required.

About Oneleet

Oneleet is a Y Combinator-funded cybersecurity startup that aims to make effective cybersecurity easy and painless for companies. The company provides a full-coverage cybersecurity platform through which companies can build, manage, and monitor their cybersecurity management program.

The core product is a roadmap for companies that helps them become secure and build trust with their partners, which requires the implementation of numerous solutions like penetration testing, vulnerability assessments, awareness training, static code scanning, endpoint monitoring, and more.

Team Size:6
Location:Amsterdam, Netherlands
Bryan Onel
Bryan Onel
Ora Onel
Ora Onel